The contact owns a 2018 Ford EcoSport. The contact stated that the air bag warning light was illuminated. The vehicle was serviced under NHTSA Campaign Number: 23V905000 (ENGINE AND ENGINE COOLING); but the recall repair failed to repair the vehicle. The contact stated that the vehicle hesitated, and the engine failed after the recall repair. The manufacturer was notified of the failure but offered no assistance. The failure mileage was 50,000.